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3 years ago

5

Our _____________ is affected by physical environment.

2 answers:

LekaFEV [45]3 years ago

6 0

Answer:

C

Explanation:

katen-ka-za [31]3 years ago

6 0

Answer:

is behavior

Explanation:

becuase behavior can be affected on the eviroment we are in

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Which statement holds true when the molar mass of hydrogen is 2.0 grams and that of helium is 4.0 grams?

ehidna [41]

I think you forgot to give the choices along with your question. I am answering the question based on my research and knowledge. "Helium effuses 0.71 times faster than hydrogen" is the statement that <span>holds true when the molar mass of hydrogen is 2.0 grams and that of helium is 4.0 grams. I hope the answer has helped you.</span>

7 0

3 years ago

Heating 2.40 g of the oxide of metal X (molar mass of X = 55.9 g/mol) in carbon monoxide (CO) yields the pure metal and carbon d

Korolek [52]

Answer:The molecular formula of the oxide of metal be $X_2O_3$ . The balanced equation for the reaction is given by:

$X_2O_3+3CO\rightarrow 3CO_2+2X$

Explanation:

Let the molecular formula of the oxide of metal be $X_2O_y$

$X_2O_y+yCO\rightarrrow yCO_2+2X$

Mass of metal product = 1.68 g

Moles of metal X = $\frac{1.68 g}{55.9 g/mol}=0.03005 mol$

1 mol of metal oxide produces 2 moles of metal X.

Then 0.03005 moles of metal X will be produced by:

$\frac{1}{2}\times 0.03005 mol=0.01502 mol$ of metal oxide

Mass of 0.01502 mol of metal oxide = 2.40 g (given)

$0.01502 mol\times (2\times 55.9 g/mol+y\times 16 g/mol)=2.40 g$

y = 2.999 ≈ 3

The molecular formula of the oxide of metal be $X_2O_3$ . The balanced equation for the reaction is given by:

$X_2O_3+3CO\rightarrow 3CO_2+2X$

8 0

3 years ago

A decomposition reaction has a half-life that does not depend on the initial concentration of the reactant.what is the order of

kupik [55]

The reaction is first order.

7 0

2 years ago

Help I’m so confused

ira [324]

Answer:

Me too. What is this for? A Lab. You are missing some kind of key info bud.

Explanation:

4 0

3 years ago

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How many liters are equivalent to 645 mililiters

abruzzese [7]

Answer:

0.645 liters

Explanation:

THE QUESTION IS equivalent 0.645 Liters

6 0

3 years ago

Read 2 more answers